Draft-equalizer



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DRAFT BQUALIZEB.. 1m-403,135. Patented May 14, 1889.v

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UNITED STATES PATENT OFFICE.

VILLIAM E. PLUMER, OF SIOUX CITY, IOVA.

DRAFT-EQUALIZER.

SPECIFICATION forming part of Letters Patent No. 403,135, dated May 14, 1889.

Application filed September 24, 1888. Serial No. 286,295. (No model.)

To @ZZ whom it may concern:

Be it known that I, WILLIAM E. PLUMER, a citizen of the United States of America, residing at Sioux City, in the county of Woodbury, in the State of Iowa, have invented new and useful Improvements in Draft-Equalizers, of which the following is a specification.

My invention relates to draft-equalizers, more particularly to four-horse draft-equalizers, principally used on harvesting-machines where four horses are worked abreast, but only one horse being upon that side of the tongue next to the standing grain.

The object of my invention is to provide a draft-equalizer of simple construction, yet strong and effective in operation, and one which will throw the draft in a straight line and as far back as possible, thereby giving a more perfect equalization and preventing si de draft.

My invention consists in certain details of construction and combination of parts, as hereinafter shown and described.

In the accompanying drawings, forming part of this specification, Figure 1 is a plan view of my equalizer, and Fig. 2 is a rear elevation of the same. Fig. 3 is an enlarged perspective detail, like letters and figures of reference denoting like parts in the drawings.

A designates the tongue, on which is mounted a keeper, 1, secured to the tongue by means of a bolt, 2, and having its front end raised above the tongue and provided with a bolt, 3.

B B designate, respectively, the long and short levers of a four-horse equalizer. The long lever B is pivotally secured to the tongue by the bolt 3, which passes through the keeper 1. The inner end of said lever is rounded and re-enforced by metal face-plates a: oc, through whichsaid bolt passes, as shown in Fig. 3. The inner end of the lever B is concave and provided with upper and lower faceplates, 4 5, the ends of which project beyond the ends of the lever and are provided with bolt-holes for the passage of the bolt 3. The long and short levers B B are thus pivotally secured to the tongue by the bolt 3 and held in position by the keeper 1, the rounded or convex end of the lever B riding in the concave end of the lever B', both levers having 5o independent action on the pivot-bolt 3.

C designates a chain connected by a clevis,

g, to the short lever B between the point of connection of the singletree 8 and the pivotbolt, and is carried around a sheave, 11, to the outer end of the long lever B, Where it is secured to an eyebolt.

12 designates a doubletree pivotallymounted at its center to and near the free end of the long lever B. On each end of said double- 6o tree are pivotally mounted the levers 13 and 14, arranged on the pivotal connection in the proportion of two to one, with the long arms thereof approaching each other, and connected at their ends, above and below, by pivoted straps a b a b, as shown in Figs. 2 and 1, to a singletree, 1G. To the outer ends of the levers 13 and 14 are pivotally attached the singletrees 17 and 1S. To secure the doubletree 12 to the long lever B, and likewise to secure the 7o levers 13 and 14 to said doubletree, I use in connection with the pivot-bolts keepers s s s. As these several parts are mounted one upon the other, I interpose between them, to prevent friction and chaiin g, the washers r r o' r. 75

In constructing my four-horse draft-equalizer, though I do not limit the scope of my invention to exact measurement, the following proportionate measurements are preferable: Give the lever B a full length of twenty- 8o three and three-eighths inchesfthat is, from its pivotal point to the point of connection of singletree 8--and attach the clevis g nine and three-eighths inches from the pivotal point. Give the lever B a full length of forty-eight and three-fourths inches from its pivotal point to the point of connection with chain C and attach the doubletree at a point thirtyfive and one-fourth inches from said pivotal point.

Having thus shown and described my inventi0n,what I claim, and desire to secure by Letters Patent, is- Y In a four-horse equalizer, the combination of the long and short levers B B having their inner ends placed one within the other, the lever B being secured to the tongue by the pivot-bolt and the shortlever B being secured to said bolt by the elongated plates, In Witness whereof I have hereunto set my ro said levers being connected by@ el1ai11,C,th hand in the presence of two attestmg Wltdoubletree l2, pivotally mounted on Washers nesses. i v

at its center to the lever B at a point near its ULM/XM, E. PLUMER. 5 free end inside of the chain C, and the levers 13 and 14, mounted on Washers at the ends of Attest:

said doubletree, their long arms being pivot- F. Il. PLUMER,

ally connected to each other :md to the single- XVM. C. MILLER,

tree 16 by the straps CL b. 

